Split street regex description

MyParcelConsignmentRepository.php

        /**
         * Regular expression used to split street name from house number.
         *
         * Street (key street)
         * (?P<street>.*?)
         *
         * An Street and house number is sometimes separated by a whitespace
         * \s?
         *
         * Insert number and extension together in one array
         * (?P<street_suffix>
         *
         * Set number (int)
         * (?P<number>[\d]+)
         *
         * Sometimes an extension begins with a dash or a space
         * [\s-]{0,2}
         *
         * Set key for extension
         * (?P<extension>
         *
         * If extension have text, / or whitespace
         * [a-zA-Z/\s]{0,5}$
         *
         * OR(!) extension has a number
         * |[0-9/]{0,5}$
         *
         * OR(!) extension has a letter followed by numbers
         * |\s[a-zA-Z]{1}[0-9]{0,3}$
         *
         * OR(!) extension has a numbers followed by letter
         * |\s[0-9]{2}[a-zA-Z]{0,3}$
         *
         * Close key for extension
         * )
         *
         * Close number and extension together
         * )
         *
         */
        const SPLIT_STREET_REGEX = '~(?P<street>.*?)\s?(?P<street_suffix>(?P<number>[\d]+)-?(?P<number_suffix>[a-zA-Z/\s]{0,5}$|[0-9/]{0,5}$|\s[a-zA-Z]{1}[0-9]{0,3}$))$~';